Abu al-Fadl J‘far ibn ‘Ali al-Dimashqi is the author of Kitab al-Isharah ila Mahasin at-Tijarah wa Marifat Jayyid al-A’rad wa Kadiiha wa Ghush-ush al-Mudallisin fiha (A Guide to the Merits of Commerce and to Recognition of Both Fine and Defective Merchandise and the Swindles of Those Who Deal Dishon...

Abu Hanifa al-Dinawari (d.895 A.D) lived in Andalusia, Muslim Spain. His work has been made known by the German scholar: Silberberg in a thesis in Breslau in 1908, which contains the descriptions of about 400 plants.